I've been gathering parts and started to put everything together and it seems that my 31 spindle doesn't protrude far enough through the 1940 ford hub. I just put new outer races B1217t which should be the same for 28-48 and im using the bearing from the 31 hub which should also fit all those years. I made the backing plate hole smaller by welding in a spacer to make up the difference instead of using the fragile piston ring spacer. I have a spacer between the spindle and the inside bearing. the spindle nut doesn't go on far enough to reach the cotter pin hole and a decent amount of the nut is not on the spindle threads. if I go any tighter there's not enough clearance for the drum to move freely. here's some pictures.